Thomas Weber is recognized as an expert on quantitative methods in finance and risk. Being a heavy user of Mathematica since Version 1.2, Thomas utilizes this powerful tool for his consultancy for big banks, energy suppliers, and other institutions. Over these many years he has extended Mathematica as needed. For example, he developed a database link long before the Data Access Kit was available. He also integrated different pricing libraries into Mathematica, which allow kinds of risk analysis that go way beyond what is normally possible within financial institutions.